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Posted to yarn-issues@hadoop.apache.org by "Radim Kolar (JIRA)" <ji...@apache.org> on 2012/12/28 23:38:12 UTC

[jira] [Commented] (YARN-297) Improve hashCode implementations for PB records

    [ https://issues.apache.org/jira/browse/YARN-297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540617#comment-13540617 ] 

Radim Kolar commented on YARN-297:
----------------------------------

You also use initial (seed) value 1 or -1. Best is to use different prime per class.
                
> Improve hashCode implementations for PB records
> -----------------------------------------------
>
>                 Key: YARN-297
>                 URL: https://issues.apache.org/jira/browse/YARN-297
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Arun C Murthy
>            Assignee: Xuan Gong
>
> As [~hsn] pointed out in YARN-2, we use very small primes in all our hashCode implementations.

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